@rxdi/lit-html NPM | npm.io

0.7.178 • Published 2 months ago

Install

Weekly downloads

19

License

MIT

Repository

Last release

2 months ago

Install

npm i @rxdi/lit-html

Example component

import { LitElement, Component, html, css } from '@rxdi/lit-html';

/**
 * @customElement rx-description
 */
@Component({
  selector: 'rx-description',
  style: css`
    .description {
      color: #222;
      font-size: 14px;
      font-weight: normal;
      text-transform: uppercase;
    }

    .text {
      color: #666;
      font-size: 15px;
      font-weight: normal;
      line-height: 1.5;
    }

    .border {
      border-top: 1px solid #e5e5e5;
      margin-top: 20px;
      padding-top: 20px;
    }
  `,
  template(this: DescriptionListComponent) {
    return html`
      <div class="container" part="container">
        <slot name="description" class="description" part="description"></slot>
        <slot name="text" class="text" part="text"></slot>
        <div class="border" part="border"></div>
      </div>
    `;
  },
})
export class DescriptionListComponent extends LitElement {}

Modifiers

What is a modifier ?

In order to apply some logic before current template is loaded like custom directives, we need to wrap current template and pass it along the actual modifier template

@Component({
  selector: 'my-modifier',
  template() {
    return html`<slot></slot>`;
  },
})
export class MyModifier extends LitElement {
  OnUpdate() {
    const slot = this.shadowRoot.querySelector('slot');
    for (const element of [...slot.assignedElements()]) {
      /// Do something here with element
    }
  }

  public static modifier(template: TemplateResult) {
    return html`<my-modifier>${template}</my-modifier>`;
  }
}

Another real example is to add FlexLayout modifier from @rhtml/modifiers which will apply useful directives to be used inside of the html inspired from Angular flex-layout https://github.com/angular/flex-layout/wiki/Declarative-API-Overview

import { Component, css, html, LitElement } from '@rxdi/lit-html';

import { FlexLayout } from '@rhtml/modifiers';

/**
 * @customElement home-component
 */
@Component({
  selector: 'home-component',
  style: css`
    .block {
      background: red;
      flex: 1;
    }
    .container {
      height: 200px;
    }
  `,
  modifiers: [FlexLayout],
  template(this: HomeComponent) {
    return html`
      <div class="container" fxLayout="row" fxLayoutGap="10px">
        <div>
          <div class="block" fxLayoutAlign="center center" fxFlexFill>A</div>
        </div>
        <div>
          <div class="block" fxLayoutAlign="center center" fxFlexFill>B</div>
        </div>
        <div>
          <div class="block" fxLayoutAlign="center center" fxFlexFill>C</div>
        </div>
        <div>
          <div class="block" fxLayoutAlign="center center" fxFlexFill>D</div>
        </div>
      </div>
    `;
  },
})
export class HomeComponent extends LitElement {}

@lit/reactive-element lit-element lit-html

@rxdi/starter-client-lit-html @everything-registry/sub-chunk-795 @infinitebrahmanuniverse/nolb-_rx @rhtml/component @rhtml/components @rhtml/core @rhtml/experiments @rhtml/graphql @rhtml/hooks @rhtml/operators @rhtml/renderer @rxdi/graphql-webcomponent @rxdi/credit-card-form @zalastax/nolb-_rx

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